CN109797642A - Prestressing force assembled UHPC overpass and its construction method - Google Patents
Prestressing force assembled UHPC overpass and its construction method Download PDFInfo
- Publication number
- CN109797642A CN109797642A CN201910218618.8A CN201910218618A CN109797642A CN 109797642 A CN109797642 A CN 109797642A CN 201910218618 A CN201910218618 A CN 201910218618A CN 109797642 A CN109797642 A CN 109797642A
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- bridge
- shaped body
- prestressing force
- overpass
- uhpc
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- 239000011374 ultra-high-performance concrete Substances 0.000 title claims abstract description 23
- 238000010276 construction Methods 0.000 title claims description 12
- 238000000465 moulding Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000008267 milk Substances 0.000 claims description 3
- 210000004080 milk Anatomy 0.000 claims description 3
- 235000013336 milk Nutrition 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 210000003205 muscle Anatomy 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 4
- 239000004567 concrete Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
The present invention relates to a kind of prestressing force assembled UHPC overpasses, including bridge pier, support stake is provided with below bridge pier, the U-shaped body of a bridge using UHPC pouring molding is provided with above bridge pier along bridge floor extending direction, rubber support is provided between the U-shaped body of a bridge and support stake, the U-shaped body of a bridge includes several U-shaped body of a bridge units, is provided with bent-up bar in the U-shaped body of a bridge, is provided with longitudinal support beam and lateral support beam below U-shaped body of a bridge unit；The invention further relates to a kind of working methods of prestressing force assembled UHPC overpass.Structure of the invention is reasonable, easy to operate, high from heavy and light, intensity, can be widely used in large span foot bridge field in science of bridge building.
Description
Technical field
The present invention relates to a kind of prestressing force assembled UHPC overpass and its construction methods.
Background technique
Since reform and opening-up, China's infrastructure is constantly improve, and urban construction and development is rapid, and vehicle is increasing, in order to
Improve traffic jam, road constantly widens, allow vehicle fast passing and ensureing people's safety, more than 30m or more it is big across
Degree foot bridge comes into being.Traditional foot bridge is mostly concrete bridge, steel bridge etc..But for comparing, concrete gravity is big, easy
Cracking is unfavorable for large span construction, and concrete has resulted in environmental pollution.Although steel structural bridge is suitble to large span construction,
Price of steel product is expensive, easily get rusty, fire resistance and durability are poor, later period maintenance is costly.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of prestressing force assembled UHPC overpass and its construction parties
Method, it is structurally reasonable, easy to operate, it is high from heavy and light, intensity, it can be widely used in large span foot bridge field in science of bridge building.
The technical scheme is that a kind of prestressing force assembled UHPC overpass, including bridge pier, it is set below bridge pier
It is equipped with support stake, the U-shaped body of a bridge using UHPC pouring molding is provided with above bridge pier along bridge floor extending direction, in the U-shaped body of a bridge
It is provided with rubber support between support stake, the U-shaped body of a bridge includes several U-shaped body of a bridge units, is provided in the U-shaped body of a bridge
Bent-up bar is provided with longitudinal support beam and lateral support beam below U-shaped body of a bridge unit.
Further, the U-shaped body of a bridge unit includes transverse slat, and transverse slat two sides are provided with side plate.
Further, setting is provided with prestress hole on transverse slat and side plate.
Further, stirrup is provided in transverse slat, longitudinal support beam and lateral support beam.
Another technical solution provided by the invention is a kind of construction method of prestressing force assembled UHPC overpass,
Including the prestressing force assembled UHPC overpass:
(1) in factory that U-shaped body of a bridge unit is prefabricated according to span and the scope of application and load demand, in prefabricated U-shaped bridge
During body unit, need to reserve prestress hole in the transverse slat and side plate of U-shaped body of a bridge unit, while in U-shaped body of a bridge unit
Every 200mm, bent-up bar is set；
(2) prefabricated U-shaped body of a bridge unit is transported to scene to splice, using post stretching prestressed reinforcement of tensioning, then
It is in the milk in prestress hole, then carries out smearing slurry processing in the splicing seams between adjacent U-shaped body of a bridge unit.
Compared with prior art, the beneficial effects of the present invention are: structure of the invention is reasonable, easy to operate, from heavy and light, intensity
Height can be widely used in large span foot bridge field in science of bridge building.
To can be more clearly understood the above objects, features and advantages of the present invention, with reference to the accompanying drawing to the present invention
Specific embodiment elaborate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the U-shaped body of a bridge unit of the present invention；
Fig. 3 is the main view of Fig. 2 of the embodiment of the present invention；
In figure: 100- bridge pier；200- supports stake；The 300-U type body of a bridge；310-U type body of a bridge unit；311- bent-up bar；312- is vertical
To backbar；313- lateral support beam；314- transverse slat；315- side plate；316- prestress hole；317- stirrup；400- rubber support.
Specific embodiment
As shown in Fig. 1 ~ 3, a kind of prestressing force assembled UHPC overpass, including bridge pier, branch is provided with below bridge pier
Stake is supportted, is provided with the U-shaped body of a bridge using UHPC pouring molding above bridge pier along bridge floor extending direction, in the U-shaped body of a bridge and support
It is provided with rubber support between stake, the U-shaped body of a bridge includes several U-shaped body of a bridge units, is provided in the U-shaped body of a bridge and bends up steel
Muscle is provided with longitudinal support beam and lateral support beam below U-shaped body of a bridge unit.Bent-up bar can enhance U-shaped body of a bridge unit
Intensity, longitudinal support beam and lateral support beam can play supporting role to U-shaped body of a bridge unit.UHPC has from heavy and light, intensity is high,
The characteristics such as tension resistance performance is good, durability and fire resistance are good are suitable for large span and build, and improve conventional concrete self weight
Greatly, easy to crack, be unsuitable for that large span construction and steel construction cost are high, maintenance expense is high, easily get rusty, the disadvantage of durability difference.
In the present embodiment, the U-shaped body of a bridge unit includes transverse slat, and transverse slat two sides are provided with side plate.
In the present embodiment, setting is provided with prestress hole on transverse slat and side plate.By the way that prestress hole is arranged, it is convenient for U
The splicing of type body of a bridge unit can the grouting in prestress hole when U-shaped body of a bridge unit spliced.
In the present embodiment, stirrup is provided in transverse slat, longitudinal support beam and lateral support beam.Stirrup can enhance cross
The intensity of plate, longitudinal support beam and lateral support beam.
Another technical solution provided by the invention is a kind of construction method of prestressing force assembled UHPC overpass,
Including the prestressing force assembled UHPC overpass:
(1) in factory that U-shaped body of a bridge unit is prefabricated according to span and the scope of application and load demand, in prefabricated U-shaped bridge
During body unit, need to reserve prestress hole in the transverse slat and side plate of U-shaped body of a bridge unit, while in U-shaped body of a bridge unit
Every 200mm, bent-up bar is set；
(2) prefabricated U-shaped body of a bridge unit is transported to scene to splice, using post stretching prestressed reinforcement of tensioning, then
It is in the milk in prestress hole, then carries out smearing slurry processing in the splicing seams between adjacent U-shaped body of a bridge unit.
Aforesaid operations process and software and hardware configuration are only used as presently preferred embodiments of the present invention, are not intended to limit the present invention
The scope of the patents, it is all using equivalents made by description of the invention and accompanying drawing content, be applied directly or indirectly in phase
Technical field is closed, is included within the scope of the present invention.
Claims (5)
1. a kind of prestressing force assembled UHPC overpass, it is characterised in that: including bridge pier, support is provided with below bridge pier
Stake, is provided with the U-shaped body of a bridge using UHPC pouring molding along bridge floor extending direction above bridge pier, in the U-shaped body of a bridge and support stake
Between be provided with rubber support, the U-shaped body of a bridge includes several U-shaped body of a bridge units, is provided in the U-shaped body of a bridge and bends up steel
Muscle is provided with longitudinal support beam and lateral support beam below U-shaped body of a bridge unit.
2. prestressing force assembled UHPC overpass according to claim 1, it is characterised in that: the U-shaped body of a bridge unit
Including transverse slat, transverse slat two sides are provided with side plate.
3. prestressing force assembled UHPC overpass according to claim 1, it is characterised in that: set on transverse slat and side plate
It sets and is provided with prestress hole.
4. prestressing force assembled UHPC overpass according to claim 1 or 2, it is characterised in that: in transverse slat, Zong Xiangzhi
Stirrup is provided in bolster and lateral support beam.
5. a kind of construction method of prestressing force assembled UHPC overpass, including prestressing force as described in claim 1 assembly
Formula UHPC overpass, it is characterised in that:
It is in factory that U-shaped body of a bridge unit is prefabricated according to span and the scope of application and load demand, in the prefabricated U-shaped body of a bridge
During unit, need to reserve prestress hole in the transverse slat and side plate of U-shaped body of a bridge unit, while every in U-shaped body of a bridge unit
Every 200mm, bent-up bar is set；
Prefabricated U-shaped body of a bridge unit is transported to scene to splice, using post stretching prestressed reinforcement of tensioning, then toward pre-
Stress is in the milk in hole, then carries out smearing slurry processing in the splicing seams between adjacent U-shaped body of a bridge unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910218618.8A CN109797642B (en) | 2019-03-21 | 2019-03-21 | Prestressed assembled UHPC pedestrian overpass and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910218618.8A CN109797642B (en) | 2019-03-21 | 2019-03-21 | Prestressed assembled UHPC pedestrian overpass and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109797642A true CN109797642A (en) | 2019-05-24 |
| CN109797642B CN109797642B (en) | 2023-12-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910218618.8A Active CN109797642B (en) | 2019-03-21 | 2019-03-21 | Prestressed assembled UHPC pedestrian overpass and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109797642B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112921826A (en) * | 2021-01-27 | 2021-06-08 | 太仓市路桥工程有限公司 | Annular corridor pedestrian bridge of quick construction |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101562603B1 (en) * | 2014-12-30 | 2015-10-23 | 주식회사 스펙엔지니어링와이엔피 | Precast pedestrian crossover bridge and the construction method therefor |
| CN205576747U (en) * | 2016-04-14 | 2016-09-14 | 中交第二航务工程局有限公司 | Cast -in -place panel braced system of U type roof beam |
| CN109057148A (en) * | 2018-09-29 | 2018-12-21 | 中路杜拉国际工程股份有限公司 | Ultra-high performance concrete is without regular reinforcement Prestressed U type beam and its construction method |
| CN209798504U (en) * | 2019-03-21 | 2019-12-17 | 福州大学 | Prestress assembled UHPC pedestrian overpass |
-
2019
- 2019-03-21 CN CN201910218618.8A patent/CN109797642B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101562603B1 (en) * | 2014-12-30 | 2015-10-23 | 주식회사 스펙엔지니어링와이엔피 | Precast pedestrian crossover bridge and the construction method therefor |
| CN205576747U (en) * | 2016-04-14 | 2016-09-14 | 中交第二航务工程局有限公司 | Cast -in -place panel braced system of U type roof beam |
| CN109057148A (en) * | 2018-09-29 | 2018-12-21 | 中路杜拉国际工程股份有限公司 | Ultra-high performance concrete is without regular reinforcement Prestressed U type beam and its construction method |
| CN209798504U (en) * | 2019-03-21 | 2019-12-17 | 福州大学 | Prestress assembled UHPC pedestrian overpass |
Non-Patent Citations (1)
| Title |
|---|
| 黄卿维;吴永银;杜任远;陈宝春;陈宜言;吴庆雄;: "活性粉末混凝土人行天桥试设计研究", 广西大学学报(自然科学版), no. 04 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112921826A (en) * | 2021-01-27 | 2021-06-08 | 太仓市路桥工程有限公司 | Annular corridor pedestrian bridge of quick construction |
| CN112921826B (en) * | 2021-01-27 | 2022-08-02 | 太仓市路桥工程有限公司 | Annular corridor pedestrian bridge of quick construction |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109797642B (en) | 2023-12-08 |
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